CAJ | 학술논문

深埋式桩板是高速铁路无砟轨道路基的一种新型结构形式，其设计方法及计算理论目前还不成熟。本文结合京沪高速铁路深厚软土地基低矮路堤深埋式桩板结构的设计参数，建立二维和三维的有限元模型，计算得出桩板结构内力分布和变形特性等。对比分析二维和三维的有限元计算表明，二维与三维框架法计算结果接近，且均满足无砟轨道的控制指标要求。为了便于设计计算，建议按照二维框架法计算结构内力。
심매식장판시고속철로무사궤도로기적일충신형결구형식，기설계방법급계산이론목전환불성숙。본문결합경호고속철로심후연토지기저왜로제심매식장판결구적설계삼수，건립이유화삼유적유한원모형，계산득출장판결구내력분포화변형특성등。대비분석이유화삼유적유한원계산표명，이유여삼유광가법계산결과접근，차균만족무사궤도적공제지표요구。위료편우설계계산，건의안조이유광가법계산결구내력。
As a newly-developed structure for the ballast track of high speed railway,deeply-buried piling board structure still falls behind in terms of designing approach and calculation theory. the paper takes reference from the designing parameters of the deeply-buried piling board structure embedded to the low embankment on deep-soft soil subgrade along Beijing-Shanghai railway. It applies both 2D and 3D finite-element models to the calculation of the internal force distribution and deformation characteristics of the piling board structure. A comparison of data from the 2D and 3D models indicates that the two approaches lead to fairly consistent results,both of which conform to relevant regulation index. T he paper suggests the 2D model for future study,as it streamlines the calculation process and delivers accurate results.